Both players came through their round two ties today at the Musashino Forest Sports Plaza, a venue for the 2020 Olympic Games.

Momota won the World Championship title in Nanjing last month, completing a remarkable comeback after he served a year's ban for illegal gambling which kept him out of the Rio 2016 Olympics.

His quest to add home success continued as he beat Denmark's Rasmus Gemke 21-16, 21-18 at the World Tour Super 750 event.

China's Lin, the Olympic champion at Beijing 2008 and London 2012, knocked out fifth seed Chou Tien-chen to also make the last eight, 10-21, 21-15, 21-19.

Elsewhere, Denmark's world number one Viktor Axelsen progressed to the quarter finals by beating Japanese home hope Kenta Nishimoto 21-13, 21-17.

Reigning Olympic champion Chen Long of China breezed through against Thailand's Suppanyu Avihingsanon, 21-6, 21-10.

Former world number one Son Wan-ho, seeded fourth, was a casualty as he lost to unseeded South Korean compatriot Lee Dong-keun, 21-13, 21-13.

In the women's draw, top seed and world number one Tai Tzu-ying of Chinese Taipei was knocked out.

Tai won the Asian Games in Jakarta last month but lost her second round tie to China's unseeded player Chen Xiaoxin, 21-18, 21-14.

India's PV Sindhu, the third seed, was also beaten, 21-18, 21-19 by China's Gao Fangjie.

Reigning Olympic and world champion Carolina Marin won a see-saw encounter against Thailand's Pornpawee Chochuwong, 21-11, 21-23, 21-11.

Japanese second seed Akane Yamaguchi advanced on home soil, 21-18, 21-19 against China's Cai Yanyan.

The quarter finals will be played tomorrow.